11001011011 has 4 divisors (see below), whose sum is σ = 11016705024. Its totient is φ = 10985317000.

The previous prime is 11001010991. The next prime is 11001011027. The reversal of 11001011011 is 11011010011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11011010011 = 67 ⋅164343433.

It is a cyclic number.

It is not a de Polignac number, because 11001011011 - 2⁹ = 11001010499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001010985 and 11001011003.

It is not an unprimeable number, because it can be changed into a prime (11001011311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7845955 + ... + 7847356.

It is an arithmetic number, because the mean of its divisors is an integer number (2754176256).

Almost surely, 2^11001011011 is an apocalyptic number.

11001011011 is a deficient number, since it is larger than the sum of its proper divisors (15694013).

11001011011 is an equidigital number, since it uses as much as digits as its factorization.

11001011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15694012.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 11001011011 its reverse (11011010011), we get a palindrome (22012021022).

The spelling of 11001011011 in words is "eleven billion, one million, eleven thousand, eleven".